Sometimes little things make a big difference. Say you're reading through some code in Visual Studio and you come across a class or function you don't immediately recognize. It's interfering with your reading of the code, right? So you copy the name into your clipboard buffer, flip out to a browser, probably with Alt-Tab, then click for a new tab, type a URL like www.live.com or www.codeproject.com, wait while the page loads, paste your buffer into the search box, click search ... wow there are a lot of opportunities to be distracted in that process.
The CodeProject has a simple add-in for Visual Studio that lets you do your searches without going anywhere. It does one thing, and does it well.
Give it a try!